If you have a lot of words or questions you want to add to a set I would recommend creating them in a spreadsheet and then importing them into WordBanker. From the main menu Click "Tools > Import Set"
Click on areas of the image for more information
To import a file browse to it by clicking the 
button above. The grid will be filled with the words from the import file. Then select the set you would like to import these words into as shown below. It is recommended that you enter a subject and title for the import in case in the future you forget what that import contained.
It you prefer to spread the words over different sets then click "Spread Words" from the drop down menu and the following window will appear. Select the sets you would like to spread the words into and click continue.
A record of all your imported files is kept and can be viewed at any time so it is advisable (though not required) that you give the set a title and subject it case you later forget what it contains.